High/medium-pressure suction and exhaust valve for water inlet valve

The utility model discloses a high/medium-pressure suction and exhaust valve for a water inlet valve. The high/medium-pressure suction and exhaust valve comprises a valve body, a floater, a valve core, a resetting spring, a valve cover, an exhaust cover with an exhaust hole and a water-draining exhaust channel, wherein the valve core comprises a valve rod and a valve handle; a spring base mounting slot is arranged at the upper end of a central hole of the valve cover; a spring base at the central hole is located in the spring base mounting slot; the resetting spring sleeves the valve rod; one end of the resetting spring is resisted against a spring gland at the top end of the valve rod; the other end of the resetting spring is resisted against the spring base; one end of the valve rod passes through the central hole of the spring base and the central hole of the valve cover in turn and is fixedly connected with the floater through a fastening nut; a conical hard sealing structure in sealing connection with a sealing surface of the valve cover is arranged on the valve rod; a plane soft sealing structure sealed with an upper surface of the valve handle is arranged on a lower surface of the valve cover. The rated work pressure fit for the high/medium-pressure suction and exhaust valve is above 10MPa; the valve can be automatically opened and can timely suck and exhaust gas; the valve is capable of resisting high-pressure impact, is easy to reset, is reliable in high-pressure sealing, is long in service life and is capable of preventing pipe explosion.